/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { Enum } from '../Enum';

export class SignStyle extends Enum{
    /**
     * Parse helper.
     *
     * @param positive  true if positive sign parsed, false for negative sign
     * @param strict  true if strict, false if lenient
     * @param fixedWidth  true if fixed width, false if not
     * @return true if valid
     */
    parse(positive, strict, fixedWidth){
        switch (this) {
            case SignStyle.NORMAL: // NORMAL
                // valid if negative or (positive and lenient)
                return !positive || !strict;
            case SignStyle.ALWAYS: // ALWAYS
            case SignStyle.EXCEEDS_PAD: // EXCEEDS_PAD
                return true;
            default:
                // valid if lenient and not fixed width
                return !strict && !fixedWidth;
        }

    }
}

SignStyle.NORMAL = new SignStyle('NORMAL');
SignStyle.NEVER = new SignStyle('NEVER');
SignStyle.ALWAYS = new SignStyle('ALWAYS');
SignStyle.EXCEEDS_PAD = new SignStyle('EXCEEDS_PAD');
SignStyle.NOT_NEGATIVE = new SignStyle('NOT_NEGATIVE');
